TY  - JOUR
T1  - Approximately Permanent Electronic Orbits and the Origin of Spectral Series
JF  - Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character (1905-1934)
VL  - 91
IS  - 626
SP  - 156
EP  - 170
PY  - 1915/02/01/
UR  - http://dx.doi.org/10.1098/rspa.1915.0005
M3  - doi:10.1098/rspa.1915.0005
AU  - Walker, G.
ER  -